If the bulwark is more than 1.2 m in average height, the required area shall be increased by 0.004 m2 per metre of length of well for each 0.1 m difference in height. If the bulwark is less than 0.9 m in average height, the required area may be decreased by 0.004 m2 per m of length of well for each 0.1 m difference in height.

(c) In ships with no sheer, the area calculated according to paragraph (b) shall be increased by 50%. Where the sheer is less than the standard, the percentage shall be obtained by linear interpolation.

(d) On a flush deck ship with a deckhouse amidships having a breadth at least 80% of the beam of the ship and the passageways along the side of the ship not exceeding 1.5 m in width, two wells are formed. Each shall be given the required freeing port area based upon the length of each well.

(e) Where a screen bulkhead is fitted completely across the ship at the forward end of a midship deckhouse, the exposed deck is divided into two wells and there is no limitation on the breadth of the deckhouse.

(f) Wells on raised quarterdecks shall be treated as being on freeboard decks.

(g) Gutter bars greater than 300 mm in height fitted around the weather decks of tankers in way of cargo manifolds and cargo piping shall be treated as bulwarks. Freeing ports shall be arranged in accordance with this regulation. Closures attached to the freeing ports for use during loading and discharge operations are to be arranged in such a way that jamming cannot occur while at sea.

(2) Where a ship fitted with a trunk does not comply with the requirements of regulation 36(l)(e) or where continuous or substantially continuous hatchway side coamings are fitted between detached superstructures, the minimum area of the freeing port openings shall be calculated from the following table:

Breadth of hatchway or trunk in relation to the breadth of ship

Area offreeing ports in relation to the total area ofthe bulwarks

40% or less 75% or more

20% 10%

The area of freeing ports at intermediate breadths shall be obtained by linear interpolation.

(3) The effectiveness of the freeing area in bulwarks required by paragraph (1) depends on the free flow area across the deck of a ship.

The free flow area on deck is the net area of gaps between hatchways, and between hatchways and superstructures and deckhouses up to the actual height of the bulwark.

The freeing port area in bulwarks shall be assessed in relation to the net free flow area as follows:

3292-18 NEWLINENEWLINE ΕΦΗΜΕΡΙΣ ΤΗΣ ΚΥΒΕΡΝΗΣΕΩΣ (ΤΕΥΧΟΣ ΠΡΩΤΟ) NEWLINENEWLINE If the bulwark is more than 1.2 m in average height, the required area shall be increased by 0.004 m2 per metre of length of well for each 0.1 m difference in height. If the bulwark is less than 0.9 m in average height, the required area may be decreased by 0.004 m2 per m of length of well for each 0.1 m difference in height. NEWLINENEWLINE (c)NEWLINENEWLINEIn ships with no sheer, the area calculated according to paragraph (b) shall be increased by 50%. Where the sheer is less than the standard, the percentage shall be obtained by linear interpolation. NEWLINENEWLINE (d)NEWLINENEWLINEOn a flush deck ship with a deckhouse amidships having a breadth at least 80% of the beam of the ship and the passageways along the side of the ship not exceeding 1.5 m in width, two wells are formed. Each shall be given the required freeing port area based upon the length of each well. NEWLINENEWLINE (e)NEWLINENEWLINEWhere a screen bulkhead is fitted completely across the ship at the forward end of a midship deckhouse, the exposed deck is divided into two wells and there is no limitation on the breadth of the deckhouse. NEWLINENEWLINE (f)NEWLINENEWLINEWells on raised quarterdecks shall be treated as being on freeboard decks. NEWLINENEWLINE (g)NEWLINENEWLINEGutter bars greater than 300 mm in height fitted around the weather decks of tankers in way of cargo manifolds and cargo piping shall be treated as bulwarks. Freeing ports shall be arranged in accordance with this regulation. Closures attached to the freeing ports for use during loading and discharge operations are to be arranged in such a way that jamming cannot occur while at sea. NEWLINENEWLINE (2) Where a ship fitted with a trunk does not comply with the requirements of regulation 36(l)(e) or where continuous or substantially continuous hatchway side coamings are fitted between detached superstructures, the minimum area of the freeing port openings shall be calculated from the following table: NEWLINENEWLINE Breadth of hatchway or trunk in relation to the breadth of ship NEWLINENEWLINE Area offreeing ports in relation to the total area ofthe bulwarks NEWLINENEWLINE 40% or less 75% or more NEWLINENEWLINE 20% 10% NEWLINENEWLINE The area of freeing ports at intermediate breadths shall be obtained by linear interpolation. NEWLINENEWLINE (3) The effectiveness of the freeing area in bulwarks required by paragraph (1) depends on the free flow area across the deck of a ship. NEWLINENEWLINE The free flow area on deck is the net area of gaps between hatchways, and between hatchways and superstructures and deckhouses up to the actual height of the bulwark. NEWLINENEWLINE The freeing port area in bulwarks shall be assessed in relation to the net free flow area as follows: NEWLINENEWLINE